SQ10ZA5 Knuckle Cranes with a Grab in Thailand

A green work truck with its red crane stretched out to a grab on the ground: eight photos from our customer in Thailand show red SQ10ZA5 knuckle boom cranes on Isuzu and UD trucks, one of them carrying the customer's own brand.

At a glance: SQ10ZA5 10 t knuckle boom crane · Thailand · behind-cab on Isuzu and UD trucks with dropside or flat bodies · 8 customer photos · one unit with the customer's own brand.

What the photos show

• The green truck. A green Isuzu truck carries a red crane behind the cab and a green dropside body. Red outriggers stand at the front and the rear, and the tailgate has two arrow-shaped light boards.
• Folded for the road. From behind, the folded crane stands upright between the cab and the body. Amber beacons are fitted on the cab roof.
• Full reach with a grab. One photo shows the boom unfolded and extended far to the side of the truck, with a red grab on a rotator resting on the ground while workers look at it.
• Two more trucks. A red UD truck has a red crane with its boom raised and the hook down. A blue Isuzu truck has a red crane marked BOB-LIFT behind the cab.
• The markings. On the green truck, the boom carries the customer's own brand and model label. We have masked them in the photos.

These are the customer's own photos. No lift weights, dates or comments came with them.

SQ10ZA5 specifications

The SQ10ZA5 is a 10 t knuckle boom truck-mounted crane with a maximum lifting moment of 21 t·m. Reach and load figures are read from the technical department's load chart drawing; the hydraulic figures come from the BOB-LIFT brochure.

Lifting moment is the load times its distance from the slewing centre. That is why the rated load drops as the boom reaches out. For example, the SQ10ZA5 lifts 10,000 kg at 2 m but only 1,480 kg at 12.63 m. Outrigger span is the width between the outrigger feet when they are fully out. Set them on firm, level ground, such as concrete or compacted gravel, before each lift. For ground and outrigger rules, see the OSHA cranes and derricks standard.

At 6.49 m from the slewing centre the crane is rated for 3,080 kg; at 8.51 m it is 2,280 kg.

The SQ10ZA5 product page has the dimension drawing and the full specification, and other 10 t models are on the 10 t knuckle boom crane page. The four-section SQ10ZA4 is load tested in our delivery record from Uzbekistan. Smaller cranes supplied in a customer's colour and brand are in our record from Thailand.

Working a grab on a 10 t knuckle boom crane

A grab turns the crane into a loading tool for logs, rubble, branches and bulk material. It also changes how the load chart is read. Four points to plan for:

1. The grab is part of the load. Take the weight of the grab and rotator off the rated load at each radius. At the full 12.63 m the crane is rated for 1,480 kg, and the grab uses part of that before it picks anything up.
2. Hydraulics for the grab and rotator. They need their own oil supply at the boom tip. Agree the extra valve section and hoses with us before production, not after delivery.
3. Outriggers out on both sides. A grab often works far to the side, as in the photos. Set all outriggers on firm ground, with pads, before the boom unfolds.
4. A clear zone around the grab. Material can slip out of the jaws. Keep people out of the swing area while the grab is loaded, and lower it to the ground when it stops.

Ordering in your own colour and brand works as on our other cranes: send the paint code, agree the boom markings, and keep the SQ10ZA5 load chart and warning labels where the operator can read them. Every model around 10 t is listed on the 10 ton crane page, and how we fit cranes to customer chassis is on the mounting and shipping page.

Checking a truck for the SQ10ZA5

Before you order, check three things on your truck. They decide whether the SQ10ZA5 fits it.

• Payload. The crane weighs 3,550 kg. Take this off the truck's payload, then plan the body and the loads you carry with what is left.
• Hydraulic power. The crane needs 40 L/min at 30 MPa, about 30 kW. The power take-off and pump on your truck must give at least this.
• Outrigger room. The outriggers span 2,310 to 5,610 mm. Make sure the frame has room for them, and that your job sites do too.

Send us the make, model and wheelbase of your truck through the contact page, and our team will check the fit.

Record compiled by Achord Chan, Product Operations Director at BOB-LIFT, from the customer's photos, the technical department's drawing and the BOB-LIFT brochure.